Endress+Hauser Flowphant T DTT31 Manual

Products Solutions Services
TI00125R/09/EN/02.14
71252099
Technical information
Flow switch
Flowphant T DTT31, DTT35
Flow switch for safe monitoring of mass flow and
temperature in industrial processes
Application
Flow switch for monitoring and displaying relative mass flow rates of liquid media in
the range from 0.03 to 3 m/s (0.1 to 9.84 ft/s):
Flowphant T DTT31 −with thread connections or coupling
Flowphant T DTT35 −with process connections for hygienic applications
Application examples:
• Monitoring cooling water circulation systems of pumps, turbines, compressors and
heat exchangers
• Monitoring pump functionality
• Leak monitoring in process lines
• Monitoring lubrication systems
• Filter monitoring in the beverage industry
Benefits at a glance
This compact flow switch impresses with the latest in technology being used:
• Practically no pressure loss
• Configuration software ReadWin 2000 or FieldCare for quick configuration and
reliable storage of device settings
• Optional: 4 to 20 mA analog output to read out the flow rate as percentage value
• Optional: second switch output or 4 to 20 mA analog output for temperature
monitoring
• Function check and process information onsite thanks to digital display at device
• Top housing section which can be rotated 310° and rotatable display make it possible
to read the measured values in all orientations
• DTT35: 3-A marked

DTT31, DTT35
2Endress+Hauser
Function and system design
Measuring principle
A0023188
The device measures the mass flow of a liquid medium with the calorimetric measurement method.
The calorimetric measuring principle is based on cooling a heated temperature sensor. Heat is removed
from the sensor by forced convection due to medium flowing by. The extent of this heat transfer
depends on the medium velocity and the difference in temperature between the sensor and medium
(King's law). The higher the velocity or the mass flow of the medium, the greater the temperature
sensor cooling.
Measuring system Overview
80
%
DJ
vm
Flowphant
product family
DTT31 DTT35
A0005276 A0023194
Measurement
probe
RTD RTD
Field of
application
Monitoring of the mass flow of water,
water-like substances and low-viscosity oils
(viscosity: 0.184 to 20.0 mPa*s; thermal
conductivity: 29 to 688 mW/mK). Example:
Aqueous solution monoethylenglycol (20
vol%) at 20 °C: Viscosity: 1.65 mPa*s;
thermal conductivity: 512 mW/mK
Monitoring of the mass flow of liquid
media in hygienic processes (viscosity:
0.184 to 20.0 mPa*s; thermal
conductivity: 29 to 688 mW/mK).
Example: Aqueous solution
monoethylenglycol (20 vol%) at 20 °C:
Viscosity: 1.65 mPa*s; thermal
conductivity: 512 mW/mK
Process
connection
• Compression fitting
•Thread:
−G½" and G¼"
−ANSI NPT ¼" and NPT ½"
•Hygiene:
−Conical metal-metal G½"
−Clamp 1" - 1½", 2"
−Varivent F, N
−DIN 11851
−APV-Inline

DTT31, DTT35
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DC voltage version
PNP switch output of electronics.
Power supply e.g. with a power supply unit.
Preferably in conjunction with programmable logic controllers (PLC) or for controlling a relay.
A0005373
A: 1x PNP switch output
B: 2x PNP switch output
C: PNP switch output with additional analog output 4 to 20 mA
m Transmitter power supply unit, e.g. RNB130
n Load (e.g. programmable logic controller, process control system, relay)
o Display e.g. RIA452 or recorder e.g. Ecograph T or Minilog B (at 4 to 20 mA analog output)
m Power supply "Easy Analog RNB130":
Primary switched-mode power supply for sensors. Space saving DIN rail mounting as per IEC 60715.
Wide-range nominal voltage input: 100 to 240 V AC; Output: 24 V DC, max. 30 V in the event of a
fault; Nominal output current: 1.5 A. Connection to monophased a.c. networks or to two phase
conductors of three-phase supply networks.
n Process display RIA452:
If you would like to read off the instantaneous value of the temperature not only locally, but also e.g.
directly from a control room or in the PC network, then one suitable device is the process display
RIA452:
Digital process display unit in 96 x 96 mm (3.78 x 3.78 in) panel mounted housing for monitoring and
displaying analog measured values with pump control and batch functions. Multicoloured 7-digit 14-
Measuring
range
Mass flow as a relative value between 0 and 100%.
Process measuring limit, liquids: 0.03 to 3 m/s (0.1 to 9.84 ft/s)
Flowphant
product family
DTT31 DTT35
é
é
é
2
2
A
VV
V
B
C
11
RNB130
24V OV
OV
24V OV
OV
IN AC
24V 13
RNB130
24V OV
OV
24V OV
OV
IN AC
24V 13
2 3
1
RNB130
24V OV
OV
24V OV
OV
IN AC
24V 13

DTT31, DTT35
4Endress+Hauser
segment LC display with large bargraph. Configuration and visualisation via RS232 interface and
ReadWin 2000 PC operating software.
o Universal Graphic Data Manager Ecograph T, Data logger Minilog B:
If you would like to read off the instantaneous value of the temperature not only locally, but also record,
analyze and display it e.g. directly from a control room or in the PC network, then the following devices
are suitable:
• Universal Graphic Data Manager Ecograph T
144 x 144 mm (5.67 x 5.67 in) panel mounted housing for electronic acquisition, display, recording,
analysis, remote transmission and archiving of analog and digital input signals. Multichannel data
recording system with multicoloured TFT display (145 mm (5.7 in) screen size), galvanically isolated
universal inputs (U, I, TC, RTD, pulse, frequency), digital inputs, transmitter power supply, limit relay,
communication interfaces (USB, Ethernet, optional RS232/485), 128 MB internal memory, external
SD card and USB stick. The Field Data Manager Software (FDM) supports data analysis at the PC;
configuration is done via FieldCare or the integrated web server.
• Data logger Minilog B
Battery powered measured value collector with 2 input channels for storing analog and digital
values. Internal memory 128 kB for max. 84000 measured values. Configuration and visualisation
via RS232 interface and ReadWin 2000 PC operating software. Optionally with telealarm function.
Input
Measured variable • Flow velocity of liquid media (calorimetric measuring principle)
• Temperature (RTD), optional for two switch outputs or additional analog output
Measuring range • Flow: 0.03 m/s to 3 m/s (0.1 to 9.84 ft/s), as relative value between 0 and 100%; maximum display
resolution: 1%
• Temperature: -20 °C to +85 °C (-4 to +185 °F); display resolution: 1 °C (1 °F)
Output
Output signal DC voltage version: (short-circuit proof version)
• 1x PNP switch output (flow) or
• 2x PNP switch outputs (flow or temperature, adjustable) or
• 1x PNP switch output and 1x 4 to20 mA output, active (flow or temperature, adjustable)
Signal on alarm Signal on alarm as per NAMUR NE43
• Underranging: Linear drop to 3.8 mA
• Overranging: Linear rise to 20.5 mA
• Sensor break; sensor short-circuit:
≤3.6 mA or ≥21.0 mA (at settings ≥21.0 mA, 21.7 mA output is guaranteed)
• Switch outputs: at safety condition (switch open)
Load Max. (Vpower supply - 6.5 V) / 0.022 A (current output)
Range of adjustment • Switch output
Switch point (SP) and switchback point (RSP) in increments of 1% with min. hysteresis of 5%
• Damping: freely adjustable: 0 = off (no damping) or 10 to 40 s in increments of 1 second
• Unit: %, optional °C, °F (with two outputs and temperature monitoring)
The analog output reads out the measured flow rate as relative value in percentage of the
adjusted measuring range.

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Switching capacity DC voltage version:
• Switch status ON: Ia≤250 mA, switch status OFF: Ia≤1 mA
• Switching cycles: > 10,000,000
• Voltage drop PNP: ≤2 V
• Overload protection
Automatic testing of switching current; output is switched off in case of overcurrent, the switching
current is tested again every 0.5 s; max. capacitance load: 14 μF for max. supply voltage (without
resistive load)
Periodic disconnection from a protective circuit in event of overcurrent (f = 2 Hz) and indication of
’Warning’
Inductive load To prevent electrical interference, only operate an inductive load (relays, contactors, solenoid valves)
when directly connected to a protective circuit (free-wheeling diode or capacitor).fdg
Power supply
Electrical connection Plug connection
A0023196
A: M12x1 connector
B: Valve connector M16x1.5 or NPT ½"
Device connection
• DC voltage version with M12x1 connector
A0006818
DTT35: Electrical cables must comply with 3-A standard, must be smooth, corrosion resistant
and cleanable.
AB
M16x1.5 / NPT ½”
M12x1
4...20 mA
L–
L–
L–
L+
L+
L+
2
2
21
1
1
3
3
34
4
4R1 m
R2
R1
A1 A2
A2’
A3

DTT31, DTT35
6Endress+Hauser
• DC voltage version with valve connector M16x1.5 or NPT ½"
P01-PTx3xxxx-04-xx-xx-xx-003
Supply voltage DC voltage version
18 up to 30 V DC (reverse polarity protection)
Current consumption < 100 mA (without load) at 24 V DC, max. 150 mA (without load); with reverse polarity protection
Power supply failure • Behaviour in case of overvoltage (> 30 V)
The device works continuously up to 34 V DC without any damage.
No damage is caused to the device in case of a short-term overvoltage up to 1 kV (as per EN 61000-
4-5).
The specific properties are no longer guaranteed if the supply voltage is exceeded.
• Behaviour in case of undervoltage
If the supply voltage drops below the minimum value, the device switches off (status as if not
supplied with power = switch open).
Performance characteristics
The percentage information in the "Performance characteristics" section refers to the full scale value or
the set maximum value (100% value) of the monitoring range.
Reference operating
conditions
As per DIN IEC 60770 or DIN IEC 61003
T = 25 °C ± 5 °C (77 °F ± 9 °F), relative humidity 45 to 75 %, ambient air pressure 860 to 1060 kPa
(124 to 153 PSI), water test medium. Supply voltage U = 24 V DC.
Maximum measured error Flow
The device records fluid velocity relatively in relation to a set monitoring range of the flow (0 to 100 %
as display value). An absolute measurement of the fluid velocity or the mass flow is not possible. The
sensitivity of the calorimetric flow sensor changes with the fluid velocity. It increases with decreasing
Item No. Output setting Order code (see Ordering information
section)
A1 1x PNP switch output DTT3x-A1A*******
A2 2x PNP switch output R1 and m (R2) DTT3x-A1B*******
A2’ 2x PNP switch output R1 and m (diagnosis/NC
contact with "DESINA" setting)
DTT3x-A1B*******
A3 1x PNP switch output and 1x analog output
(4 to 20 mA)
DTT3x-A1C*******
Item No. Output setting Order code (see Ordering information
section)
B 1x PNP switch output DTT3x-A2A*******; DTT3x-A3A*******

DTT31, DTT35
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fluid velocity (for example, with water, the greatest sensor sensitivity is recorded in the range from
0.03 to 0.5 m/s).
A0008181-EN
Standard characteristic
A, B: Set monitoring ranges of the flow (example)
LOWF 0%: Setting for the minimum fluid velocity occurring in the monitoring range A or B (0% value)
HIF 100%: Setting for the maximum fluid velocity occurring in the monitoring range A or B (100% value)
Temperature
• Accuracy: 2 K (3.6 °F)
• Repeatability: 1 K (1.8 °F)
• Influence of medium temperature: 0.05 %/K of full scale value
Switch point non-
repeatability
Temperature gradient In the event of a temperature change of ≥0.5 K/min in the medium, temporary display drifts are
possible which can exceed the specified non-reproducibility values of the switch point.
Sensor reaction time 6 to 12 s
Long-term drift 0.5% per year under reference operating conditions
0
LOWF 0%
HIF 100%
LOWF 0%
HIF 100%
A
B
Flow rate
Sensor signal
Measuring range
(water as medium)
% of maximum value Influence of
medium temperature1)
1) The values indicated only apply to the device itself without taking the temperature-dependent change of the
thermo-physical properties of the medium into account. For this reason, we recommend you commission
the device at the process temperature and set the switch points (see 'Learn function' →ä13)
Influence of
ambient temperature
0.03 to 0.5 m/s
(0.1 to 1.6 ft/s)
≤2 %2)
2) For a Reynolds number > 10,000
0.05 %/K 0.04 %/K
0.03 to 1 m/s
(0.1 to 3.28 ft/s)
≤3 %2) 0.10 %/K 0.05 %/K
0.03 to 2 m/s
(0.1 to 6.56 ft/s)
≤5 %2) 0.15 %/K 0.10 %/K
0.03 to 3 m/s
(0.1 to 9.84 ft/s)
≤10 %2) 0.20 %/K 0.30 %/K

DTT31, DTT35
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Long-term reliability
Switch output response time 100 ms
Analog output • Maximum measured error = switch point error and display error + 0.1%
•RisetimeT
90: ≤200 ms
• Settling time T99: ≤500 ms
Operating conditions: Installation instructions
Installation instructions
• Electrical rotation of display by 180°
• Housing can be rotated up to 310 ° mechanically
Orientation No restrictions, but self draining.
Mean time between failure (MTBF) calculated according to SN29500 (at 40 °C)
Low stress environment: <0.1G 227 years
High stress environment: >0.1G 48 years
• The sensor tip should be completely surrounded by
medium.
• Position the sensor tip in the area of maximum fluid
velocity (pipe center).
• Minimum sensor immersion length: Li≥10 mm (0.4 in)
A0006976
Installation conditions
Orientation
• For horizontal pipes: lateral installation.
Installation from above only if the pipe is completely
filled with medium.
• For vertical pipes: installation in the ascending pipeline.
• DTT35: min. 3° inclination, because of self draining.
A0006977
Correct orientation
NOTICE
Do not install in down pipes open towards the end.
The sensor tip should never touch the pipe wall.
A0006978
Incorrect installation!
80
%
Li
vm
1
80
%
80
%
80
%
3°=

DTT31, DTT35
Endress+Hauser 9
Inlet and outlet run
NOTICE
The thermal measuring principle is sensitive to disturbed flow conditions.
‣As a general rule, install the measuring device as far away as possible from any flow disturbances.
For further information →ISO 14511.
‣If possible, install the sensor upstream from fittings such as valves, T-pieces, elbows, etc.
‣To attain the specified level of accuracy of the measuring device, the inlet and outlet runs
mentioned below must be maintained at the very minimum.
‣If there are several flow disturbances present, the longest specified inlet run must be maintained.
A0023225
1Reduction
2Expansion
3 90° elbow or T-section
4Pump
5 Control valve
6 2x 90° elbow 2- or 3-dimensional
Operating conditions: Environment
Ambient temperature range –40 to +85 °C (-40 to +185 °F)
Storage temperature –40 to +85 °C (-40 to +185 °F)
Climate class 4K4H as per DIN EN 60721-3-4
Degree of protection IP65 (optional IP66, depending on used connector)
Shock resistance 50 g as per DIN IEC 68-2-27 (11 ms)
Vibration resistance • 20 g as per DIN IEC 68-2-6 (10-2000Hz)
• 4 g as per German Lloyd GL Guidelines
Electromagnetic
compatibility
• Interference emission as per IEC 61326 Series, class B electrical equipment
• Interference immunity as per IEC 61326 Series, appendix A (industrial use) and NAMUR
Recommendation NE 21
EMC influence: ≤0.5 %
5 × DN 3 × DN
3 × DN
15 × DN
5 × DN
3 × DN 3 × DN
3 × DN
5 × DN
3 × DN
10 × DN
5 × DN
1
4
2
6
3
5

DTT31, DTT35
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Operating conditions: Process
Process temperature limits -20 to +85 °C (-4 to +185 °F)
The sensor can be exposed up to 130 °C (266 °F) without damage; monitoring switches off
automatically at T ≥85 °C (185 °F) and starts again at T ≤85 °C (185 °F).
Process pressure limits Maximum permitted process pressure pmax ≤10 MPa = 100 bar (1450 psi)
NOTICE
The maximum process pressure for the conical metal-metal process connection (MB option) for the
DTT35 is 1.6 MPa = 16 bar (232 psi)!
Process flow limit Liquids: 0 up to 3.0 m/s (0 up to 9.84 ft/s)
Operating range Liquids: 0.03 up to 3.0 m/s (0.1 up to 9.84 ft/s)
Mechanical construction
Design, dimensions DTT31,
DTT35
Dimensions
A0005279
All dimensions in mm (in)
L = Insertion length
Connector M12x1 as per IEC 60947-5-2
Valve connector M16x1.5 or NPT ½" as per DIN 43650A/ISO 4400
42.3 (1.66)
97.1 (3.82)
42.1 (1.66)
38.7 (1.52) 38.7 (1.52)
36 (1.42)
24 (0.95) 24 (0.95)
52 (2.05)
38.5 (1.52)
M16x1.5 / NPT ½”
M12x1
LL L
6 (0.24) 6 (0.24) 6 (0.24)

DTT31, DTT35
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DTT31 design, dimensions
for process connections
A0007101
Process connections DTT31
DTT35 design, dimensions
for process connections
A0011776
All dimensions in mm (in)
L = insertion length
m
AB C
n
L
L1
L2
L1= L2
Item No. Version DTT31 Insertion length L Thread length L1Screw-in length L2
A Without process connection. For suitable welding bosses and
compression fittings see 'Accessories'.
30 and 100 mm
(1.18 and 3.94 in)
--
B Threaded process connection:
•ANSINPT¼"(m= AF14)
•ANSINPT½"(m= AF27)
• 14.3 mm (0.56 in)
•19mm(0.75in)
• 5.8 mm (0.23 in)
• 8.1 mm (0.32 in)
C Cylindrical threaded process connection in inches as per ISO 228:
•G¼"(n= AF14)
•G½"(n= AF27)
•12mm(0.47in)
•14mm(0.55in)
-
DB DL
56.5 (2.22)
64 (2.52)
LL
18 (0.71)
HL
B
19 (0.75)
PL
13 (0.51)
PH
13 (0.51)
(APV-Inline)
(CLAMP 1”) (CLAMP 2”)
(Varivent N)
LB
18 (0.71)
(Varivent F)
(DIN 11851)
(DIN 11851)
L
13 (0.51)
PG(DIN 11851)
10 (0.39)
MB
L1
SW/
AF 22
37 (1.46)
G½”
43.5 (1.71)
50.5 (1.99)
84 (3.31)
68 (2.68) 61.5 (2.42)
82 (3.23)
100 (3.94)
66 (2.6)
50 (1.97)
51 (2.01)
68 (2.68)
27 (1.06)
44 (1.73)
39 (1.54)
56 (2.21)
Item No. Process connection versions DTT35
MB Conical metal-metal for hygienic processes, G½" thread. Suitable welding boss available as an
accessory. Thread length L1= 14 mm (0.55 in)
DB Clamp 1" up to 1½" (ISO 2852) or DN 25 up to DN 40 (DIN 32676)

DTT31, DTT35
12 Endress+Hauser
Weight approx. 300 g (10.6 oz), depends on sensor length and process connection
Material • Process connection: AISI 316L
Surfaces in contact with process in hygienic version with surface quality Ra ≤0.8 μm
Coupling nut: AISI 304
• Housing: AISI 316L, with surface quality Ra ≤0.8 μm (31.5 μin)
O ring between housing and sensor modul: EPDM
• Electrical connection:
M12 connector: exterior AISI 316L, interior polyamide (PA)
Valve plug: outer polyamide (PA)
M12 connector: exterior 316L
Cable outer covering: polyurethane (PUR)
O ring between electrical connection and housing: FKM
• Display: Polycarbonate PC-FR (Lexan®)
Seal between display and housing: SEBS THERMOPLAST K®
• Keys: Polycarbonate PC-FR (Lexan®)
Human interface
Operating elements Position of display and operating elements
A0020825-EN
DL Clamp 2" (ISO 2852) or DN 50 (DIN 32676)
LB Varivent F DN25-32, PN 40
LL Varivent N DN40-162, PN 40
HL APV inline, DN 50, PN 40, 316L, (B = 6 x Ø8.6 bores + 2 x M8 thread)
PL DIN 11851, DN50, PN40 (including coupling nut)
PG DIN 11851, DN25, PN40 (including coupling nut)
PH DIN 11851, DN40, PN40 (including coupling nut)
Item No. Process connection versions DTT35
Operating keys
E
Communication jack
for personal computer
LED for status
Green = ok
Red = error/fault
LED red/green blinking = warning
Digital display
Illumination white (= ok)
Illumination red (= error/fault)
Yellow LEDs for switching states
LED on = switch closed
LED off = switch open

DTT31, DTT35
Endress+Hauser 13
Onsite operation Menu-guided operation using operating keys.
Function group Function (display) Description
BASE
(basic functions)
Display (DISP) Display assignment:
–OFF
– Display of current measured value or of configured
switch point (switch 1)
– Display of current measured value or of configured
switch point (switch 1) rotated 180°
– Display of current medium temperature
– Display of current medium temperature rotated
180°
Factory setting: current measured value
UNIT Display medium temperature unit °C or °F
Factory setting: °C
Only visible if the current medium
temperature is selected in the DISP mode.
Damping (TAU) Measured value damping with regard to display value
and output:
0 (no damping) or 9 to 40 s (in increments of 1
second)
Factory setting: 0 s
DESINA (DESI)
Only for 2 x PNP switch outputs
Behavior as per DESINA: The PIN of the M12
connector is assigned in accordance with the
guidelines of DESINA.
(DESINA = DistributEd and Standardized INstAllation
technology for machine tools and manufacturing
systems)
CAL (calibration) Learn High Flow (HIF) Setting for maximum flowrate occurring.
100% value
Learn Low Flow (LOWF) Setting for minimum flowrate occurring.
0% value

DTT31, DTT35
14 Endress+Hauser
OUT
(Setting for the 1st
output)
OUT2
(Setting for the 2nd
output, optional)
Switching mode (MODE) Output switching mode for channel 2: flow or
temperature
Factory setting: flow
UNIT Temperature unit selection (°C/°F)
Function only visible if switching mode
(MODE) is set to temperature in the 2nd
output.
Function 1 (FUNC)
Function 2 (FNC2), optional
Switch output function:
hysteresis function NC contact or NO contact (see
diagram)
Switch point (SP)
Switch point 2 (SP2), optional
• Enter value 5 to 100% in increments of 1%, only if
High and Low Flow (HIF and LOWF) have been
configured beforehand.
Factory setting: 50%
Or optionally for SP2:
• Enter value -15 to 85 °C (-5 to 185 °F) in
increments of 1 °C (1 °F) if the switching mode
(MODE) is set to temperature.
Factory setting: 55 °C
Switch point learn (SPL)
Switch point learn 2 (SP2L),
optional
Take current flowrate as SP.
Switch-back point (RSP)
Switch-back point 2 (RSP2),
optional
• Enter value 0 to 95% in increments of 1%.
Factory setting: 40%
Value has to be at least 5% smaller than
switch point 2 (SP2).
Or optionally for RSP2:
• Enter value -20 to 80 °C (-4 to 176 °F) in
increments of 1 °C (1 °F) if the switching mode
(MODE) is set to temperature.
Factory setting: 50 °C
Value has to be at least 5 °C (9 °F) smaller
than switch point 2 (SP2).
Switch point delay (TSP)
Switch point 2 delay (TSP2),
optional
Can be set anywhere between 0 and 99 s in
increments of 1 second.
Factory setting: 0 s
Switchback point delay (TRSP)
Switchback point delay 2
(TRSP2)
Can be set anywhere between 0 and 99 s in
increments of 1 second.
Factory setting: 0 s
Analog output 4-20
(Setting for the analog
output, optional)
Output mode (MODE) Process value for analog output:
flow rate or temperature
Factory setting: FLOW
Error current (FCUR) Current value in event of error:
alternatively MIN = ≤3.6 mA, MAX = ≥21.7 mA,
HOLD = last current value
Factory setting: MAX
SERV
(service functions)
Preset (PRES) Resetting of all settings to factory settings.
Static revision counter (REVC) Configuration counter, incremented each time the
configuration is changed.
Operating code (LOCK) Enter the device locking code.
Edit operating code (CODE) Locking, only visible with valid operating code.
Device status (STAT)
Last error (LSTA) Display of last error to occur.
Simulation:
switch output version
Simulation 1 (SIMU)
Simulation 2 (SIM2), optional
Simulation switch output 1: on/off with display,
optionally corresponding to switch output 2.
Function group Function (display) Description

DTT31, DTT35
Endress+Hauser 15
Switch-point function
Remote operation
via PC
Operation, visualization and maintenance with PC and PC configuration software ReadWin 2000 or
FieldCare.
A0008072
Operation, visualization and maintenance with PC and configuration software.
Item 1: PC with ReadWin 2000 or FieldCare configuration software
Item 2: TXU10-AA or FXA291 configuration kit (see "accessories")
Item 3: Flow switch
In addition to the operating options listed in the previous "Onsite operation" section, the ReadWin 2000
configuration software or FieldCare provides further information on the Flowphant T:
Simulation:
analog output version
(4 to 20 mA)
•Simulation1(SIM)
- switch output
•Simulation2(SIMA)
- analog output
• Simulation switch output 1: on/off with display
• Simulation values for analog output in mA.
• Hysteresis function
The hysteresis function enables two-point control
via a hysteresis. Depending on the flow, the
hysteresis can be set via the switch point SP and
the switch-back point RSP.
A0005280
m Hysteresis function, n NO contact, o NC contact
SP switch point; RSP switch-back point
• NO contact or NC contact.
This switch function is freely selectable.
• Delay times for switch point SP and switch-back
point can be set in increments of 1 s. By this
means undesirable temperature peaks of short
duration or of high frequency can be filtered out.
Function group Function (display) Description
t
1
2
3
%
SP
RSP
0
0
1
1
132
Function group Function (display) Description
SERV
(service functions)
Switching processes 1
Switching processes 2,
optional
Number of changes in switching status for
switch output 1; optionally switch output 2

DTT31, DTT35
16 Endress+Hauser
Certificates and approvals
CE-Mark The device meets the legal requirements of the EC directives. Endress+Hauser confirms that the device
has been successfully tested by applying the CE mark.
GL Ship building approval (Germanischer Lloyd)
Other standards and
guidelines
• IEC 60529: Degree of protection by housing (IP-Code)
• IEC 61010-1: Safety requirements for electrical measurement, control and laboratory
instrumentation.
• IEC 61326-series: Electrical equipment for measurement, control and laboratory use - EMC
requirements.
• NAMUR: User association of automation technology in process industries (www.namur.de)
• NEMA: Standardization association for the electrical industry in North America.
Hygiene standard The DTT35 flow switch meets the requirements of Sanitary Standard no. 74-06. Endress+Hauser
confirms this by applying the 3–A symbol (depending on the selected process connection).
UL listed for Canada and USA The device was examined by Underwriters Laboratories Inc. (UL) in accordance with the standards
UL 61010B-1 and CSA C22.2 No. 1010.1-92 and listed under the number E225237 UL.
Ordering information
Detailed ordering information is available from the following sources:
•IntheProduct Configurator on the Endress+Hauser website:
www.endress.com ÈSelect country ÈInstruments ÈSelect device ÈProduct page function:
Configure this product
• From your Endress+Hauser Sales Center:
www.endress.com/worldwide
INFO
(device information)
TAG 1
TAG 2, optional
Tagging, 18-digit
Order code Order code
Serial number Device serial number
Sensor serial number Sensor serial number
Electronics serial number Electronics serial number
Device revision Display of entire revision
Hardware revision Hardware version
Software revision Software version
Function group Function (display) Description
Product Configurator - the tool for individual product configuration:
• Up-to-the-minute configuration data
• Depending on the device: Direct input of measuring point-specific information such as
measuring range or operating language
• Automatic verification of exclusion criteria
• Automatic creation of the order code and its breakdown in PDF or Excel output format
• Ability to order directly in the Endress+Hauser Online Shop

DTT31, DTT35
Endress+Hauser 17
Accessories
All dimensions in mm (in).
EN10204-3.1 = Material certificate (melt analysis)
Welding boss with sealing
taper for DTT31
Collar welding boss for
DTT31
Coupling for DTT31
Welding boss with sealing
taper (metal-metal) for
DTT35
Coupling
Collar welding boss moveable with sealing taper
and pressure screw;
material of parts in contact with the process:
316L, PEEK, max. process pressure 10 bar (145
PSI)
Order number: 51004751
A0020709-EN
G½”
25 (0.98)
36 (1.42)
30 (1.18)
6 (0.24)
AF24
Material of parts in contact with process: 316L
Order number: 51004752
A0020710
25 (0.98)
30 (1.18)
G½”
6 (0.24)
moveable coupling, G½" process connection,
coupling and parts in contact with process: 316L
Order number: 51004753
A0020174-EN
G½”
45 (1.77 )
15 (0.59)
6 (0.24)
+1 +0.04
AF14
AF27
Welding boss for G½" thread
Seal, metal-metal,
Material of parts in contact with process: 316L/
1.4435
Max. process pressure 16 bar (232 PSI)
Order number: 60021387
A0006621
30 (1.18)
16 (0.63)
34 (1.34)
15 (0.6)
G½”
Coupling M12x1 for simple user installable
assembly of the connecting cable; straight
connection to M12x1 housing connector
Order number: 52006263
P01-PMP13xxx-00-xx-00-xx-003

DTT31, DTT35
18 Endress+Hauser
Coupling
Connecting cable (pre-
assembled)
Connecting cable with LED
Configuration kit
Coupling M12x1 for simple user installable
assembly of the connecting cable; elbowed;
connection to M12x1 housing connector
IP67, PG7
Order number: 51006327
A0020722
20
(0.79)
41
(1.61)
35 (1.38)
14.8
(0.58)
PVC cable, 4 x 0.34 mm2 (22 AWG) with M12x1
coupling, elbowed, screw plug, length 5 m (16.4
ft), IP67
Order number: 51005148
Core colours:
- 1 = BN brown
- 2 = WH white
- 3 = BU blue
- 4 = BK black A0020723
12 (WH) nc
2
1 (BN) +
43 (BU) -
3
4 (BK) nc
PVC cable, 4 x 0.34 mm2 (22 AWG) with M12x1
coupling, with LED, elbowed, 316L screw plug,
length 5 m (16.4 ft), specially for hygiene
applications, IP69K
Order number: 52018763
Display:
−gn: device operational
−ye1: switch status 1
−ye2: switch status 2
Not for use at devices with "4 to 20 mA
analog output" option!
T09-TTR31xxx-00-00-xx-xx-001
ye 1
ye 2 gn
• Configuration kit for PC-programmable
transmitters - ReadWin 2000 setup program
and interface cable for PCs with USB port.
Adapter for transmitters with 4-pole post
connector.
Order code: TXU10-AA
• Configuration kit "Commubox FXA291" with
interface cable for PCs with USB port.
Intrinsically safe CDI interface
(Endress+Hauser Common Data Interface) for
transmitters with 4-pole post connector.
Suitable device configuration tool is e.g.
FieldCare.
Order code: FXA291
A0008067

DTT31, DTT35
Endress+Hauser 19
Configuration software
Power supply • Power supply Easy Analog RNB130 by Endress+Hauser with nominal output current IΝ= 1.5 A.
Details see Technical information TI120R/09/en.
• Process display RIA452 by Endress+Hauser with transmitter power supply,
max. output current I = 250 mA.
Details see Technical information TI113R/09/en.
Documentation
Technical information • Easy Analog RNB130: TI120R/09/en
• Process display RIA452: TI113R/09/en
• Universal Data Manager Ecograph T: TI01079R/09/en
• Datalogger Minilog B: TI089R/09/en
Operating manual • Flow switch Flowphant T DTT31, DTT35: BA00235R/09/en
• Configuration software ReadWin 2000: BA137R/09/en
• ReadWin 2000 and FieldCare ’Device Setup’ can be downloaded free of charge directly from the
internet at the following addresses:
www.endress.com/readwin
www.products.endress.com/fieldcare
For the order of the FieldCare ’Device Setup’ software please ask your Endress+Hauser sales
organisation.

DTT31, DTT35
www.addresses.endress.com